Accton Technology ES4710BD manual Spanning-tree forward-time, Spanning-tree hello-time

ES4710BD 10 Slots L2/L3/L4 Chassis Switch

10.2.2.6spanning-tree

Command: spanning-tree no spanning-tree

Function: Enables MSTP in Global Mode and Port Mode; the "no spanning-tree" command disables MSTP.

Command mode: Global Mode and Port Mode

Default: MSTP is disabled by default.

Usage Guide: If MSTP is enabled in Global mode, MSTP will be enabled on all ports except those already running applications mutually exclusive to MSTP.

Example: Enabling MSTP under Global Mode and disabling MSTP for port 1/2. Switch(Config)#spanning-tree

Switch(Config)#interface ethernet 1/2 Switch(Config-Ethernet1/2)#no spanning-tree

10.2.2.7spanning-tree forward-time

Command: spanning-tree forward-time <time> no spanning-tree forward-time

Function: Sets the delay time before forwarding; the “no spanning-treeforward-time” command restores the default setting.

Parameters: < time> is the forward delay time in seconds , the valid range is 4 to 30.

Command mode: Global Mode

Default: The default forward delay time is 15 seconds.

Usage Guide: When the network topology changes, the delay time for a port changes from blocking status to listening status. This is called forward delay time. The forward delay time, Hello time and max age time are associated. When configuring MSTP time parameters, the following conditions must be met, otherwise the MSTP may not work properly:

2×(Bridge_Forward_Delay – 1.0 seconds) >= Bridge_Max_Age Bridge_Max_Age >= 2 ×(Bridge_Hello_Time + 1.0 seconds)

Example: Setting MSTP forward delay time to 20 seconds in Global Mode. Switch(Config)#spanning-tree forward-time 20

10.2.2.8spanning-tree hello-time

Command: spanning-tree hello-time <time> no spanning-tree hello-time

Function: Sets the Hello time for the switch; the “no spanning-treehello-time” command restores the default setting.

Parameters: < time> is the Hello time in seconds, the valid range is 1 to 10.

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